This strange episode begins when an away-team, lead by Worf, encounter a problem which leads to the death of one of the members, Lt. Marla Aster. She is killed leaving a young son, Jeremy Aster, to face the her death head-on. But while Jeremy is grieving his mother's death, she all of the sudden appears in his room stating her death was a big mistake and she want Jeremy to come live with her on the planet.
Jeremy is now torn between his mother alive and the crew of the Enterprise telling him that it's an alien presents that is acting like his mother. When the Enterprise takes action to remove the alien from the ship, it returns with a vengeance.
A very nice story that involves death and remembrance. We will learn that the alien's motive is respectable but misunderstood in human's perception. Some good emotional scenes with Wesley and another with Worf. Entertaining story that was enjoyable to watch and learn.